27 March 2019
Power Electronics / Power Management
Calex has added the 48S14.250BC bidirectional DC-DC converter to its product range. The 3,5 kW, non-isolated converter provides a complete solution for in-vehicle power distribution in 48 V/ 12 V battery configurations for a variety of applications including micro and mild hybrid automotive systems.
The device charges a low-side (12 V) battery during normal operation (buck mode) and charges or assists the high-voltage (48 V) battery in emergency situations (boost mode). It is packaged in a low-profile 24 x 13,63 x 1,84 cm, mechanically enclosed package weighing 1,3 kg.
The 48S14.250BC uses a CAN 2.0b interface for complete control of the converter as well as monitoring LS current and internal temperature of the converter. It includes a disconnect switch based on a back to-back MOSFET configuration for the low-side (12 V battery).
The converter has reverse voltage protection, short circuit protection as well as low standby current for the low-side. The packaging makes the unit ideal for harsh shock and vibration requirements as well as easy integration into a battery pack. The baseplate of the enclosure allows for ease of mounting to a chill plate or chassis. The operational baseplate temperature range of the 48S14.250BC is -40°C to 100°C.
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